Flu season is a normal occurrence every year. However, when the pandemic flu or H1N1 spread across the globe in 2009, people became more aware of the seriousness of this type of flu. Often referred to as 'swine flu', H1N1 can be contracted from one person to another by respiratory droplets. The symptoms of H1N1 usually last for 4 to 6 days.
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The increasing number of patients each year usually causes the shortage of flu vaccines. However, not all flu vaccines have the same ingredients since there there's the existence of the regular flu as well as the H1N1 or swine flu virus. H1N1 or swine flu is the most threatening among the two types of major flu viruses because it was the culprit of the 2009 pandemic.
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Flu has been around for centuries. It has a deadly history, taking thousands of lives. To prevent that, scientists have worked to develop flu vaccines to help protect people from the possible harmful results of an influenza infection. But, are these vaccines all they are cracked up to be?
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